[culcune]

Welcome! The lowest cost route is to purchase a Chinese Grom clone which I call GLV (Grom Like Vehicle) and a 140, 160, or 190 engine and swap the engine yourself. Kronik Racing in Simi Valley, Cal. sell engines, and the parts to streamline the swap. They have a few customers who have converted the Vader 125 to 190cc engine. Another place is T-Bolt USA who are pit bike specialists, but most if not all the same applies to the GLVs. The other route is to wait until Pitster Pro releases their 190cc mini beast. The downside is based on MSRP, it will cost you more $ and you won't have the stock 125cc engine to recoup more $. The upside is they have done all the work for you and it does not cost much more that buying a bike and Pitster's crate engine, although like I wrote, you won't have the stock engine to sell. I know Pitster generally sells lower than MSRP, so it might be worth it to wait and look into it.